Image from Wikimedia Commons
Rabanus Flavus - Public Domain
Erik Charlton - CC BY 2.0
Becker & Maass, Berlin; - Public Domain
Frederik Riise - Public Domain
Geraldshields11 - CC BY-SA 4.0
unknown -
John Smibert - Public Domain
Fran Collin http://www.francollin.com - CC BY-SA 3.0
Brianmcmillen - CC BY-SA 4.0
unknown - Public Domain
Microne - CC BY-SA 4.0
(extracted by:) Jochen Burghardt -
author info - Public Domain
Anonymous - Public Domain
No photographer named in original source. - Public Domain
Image from Wikimedia Commons
Rabanus Flavus - Public Domain
Spitta, Karl Johann Philipp, 1801-1859
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Buckley, Emerson, 1916-1989
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Erik Charlton - CC BY 2.0
Chihuly, Dale, 1941-
Image from Wikimedia Commons
Becker & Maass, Berlin; - Public Domain
Rank, Otto, 1884-1939
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Amadon, Dean
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Aylmer, Matthew Whitworth-Aylmer, Baron, 1775-1850
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Frederik Riise - Public Domain
Bendix, Victor, 1851-1926
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Karpis, Alvin, 1908-1979
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Geraldshields11 - CC BY-SA 4.0
Ferling, John E.
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Gaucher, Charles-Étienne, 1741-1804
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Bagby, Arthur P. (Arthur Pendleton), 1794-1858
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unknown -
Gabrielli, Giuseppe, 1903-1987
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John Smibert - Public Domain
Sewall, Samuel, 1652-1730
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Slayton, Donald K., 1924-1993
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Fran Collin http://www.francollin.com - CC BY-SA 3.0
Colina, Michael
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Holmes, Alfred, 1837-1876
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Brianmcmillen - CC BY-SA 4.0
Collette, Buddy, 1921-2010
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unknown - Public Domain
Cai, Chusheng, 1906-1968
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Webster, Noah, 1758-1843
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Madariaga, Salvador de
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Microne - CC BY-SA 4.0
Janigro, Antonio
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(extracted by:) Jochen Burghardt -
Sinnott, Edmund W. (Edmund Ware), 1888-1958
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author info - Public Domain
Deldevez, Édouard Marie Ernest, 1817-1897
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Anonymous - Public Domain
Orléans, Louis, duc d', 1372-1407
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No photographer named in original source. - Public Domain
Dromgoole, Will Allen, 1860-1934
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Hund, Friedrich, 1896-1997
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Wanton, Joseph, 1705-1780
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Borja y Velasco, Gaspar de, 1580-1645
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Lombard, Lambert, 1506-1566
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unknown - Public Domain
Abramskiĭ, A. S. (Aleksandr Savvatʹevich), 1898-1985